class RubyVM::AbstractSyntaxTree::Node

RubyVM::AbstractSyntaxTree::Node instances are created by parse methods in RubyVM::AbstractSyntaxTree.

This class is MRI specific.

Public Instance Methods

children → array click to toggle source

Returns AST nodes under this one. Each kind of node has different children, depending on what kind of node it is.

The returned array may contain other nodes or nil.

# File ruby_3_0_5/ast.rb, line 133
def children
  Primitive.ast_node_children
end

first_column → integer click to toggle source

The column number in the source code where this AST’s text began.

# File ruby_3_0_5/ast.rb, line 106
def first_column
  Primitive.ast_node_first_column
end

first_lineno → integer click to toggle source

The line number in the source code where this AST’s text began.

# File ruby_3_0_5/ast.rb, line 98
def first_lineno
  Primitive.ast_node_first_lineno
end

inspect → string click to toggle source

Returns debugging information about this node as a string.

# File ruby_3_0_5/ast.rb, line 141
def inspect
  Primitive.ast_node_inspect
end

last_column → integer click to toggle source

The column number in the source code where this AST’s text ended.

# File ruby_3_0_5/ast.rb, line 122
def last_column
  Primitive.ast_node_last_column
end

last_lineno → integer click to toggle source

The line number in the source code where this AST’s text ended.

# File ruby_3_0_5/ast.rb, line 114
def last_lineno
  Primitive.ast_node_last_lineno
end

type → symbol click to toggle source

Returns the type of this node as a symbol.

root = RubyVM::AbstractSyntaxTree.parse("x = 1 + 2")
root.type # => :SCOPE
lasgn = root.children[2]
lasgn.type # => :LASGN
call = lasgn.children[1]
call.type # => :OPCALL

# File ruby_3_0_5/ast.rb, line 90
def type
  Primitive.ast_node_type
end